Ac fan
#1
08-12-12, 10:57 AM
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Ac fan
Folks:
I have central air conditioning in my house.The air compressor is outside
and the air handler is in my attic.They are approx.eight years old.The system
worked fine until last night.When the temperature is satisfied the compressor
unit shuts down but the fan in the air handler does not.I changed the programmable thermostat but the fan still won't shut off.I would appreciate
any and all suggestions to fix this.Thank you in advance. Ron
I have central air conditioning in my house.The air compressor is outside
and the air handler is in my attic.They are approx.eight years old.The system
worked fine until last night.When the temperature is satisfied the compressor
unit shuts down but the fan in the air handler does not.I changed the programmable thermostat but the fan still won't shut off.I would appreciate
any and all suggestions to fix this.Thank you in advance. Ron
#2
08-12-12, 11:01 AM
Member
sounds like the blower relay is stuck, but to be sure remove t-stat from wall and disconnect wire on G terminal. Does the fan shut off? If yes, then you need a thermostat, if no, then you need to check the air handler.
#3
08-12-12, 11:14 AM
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Thank you for your reply.I removed the green wire fan didn't shut off.Were
would I find the blower relay and how to I test it. Ron
would I find the blower relay and how to I test it. Ron
#4
08-12-12, 11:16 AM
Member
the relay may be part of a control board in your air handler, or it may be by itself. First thing I need is the make and model number of the air handler.
#5
08-14-12, 11:20 AM
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Ac fan to hvactechfw
Finally got someone to climb into attic.The air handler is a carrier.The data
plate was hard to read hope this is right FB4NI 036. THE PART NUMBER WAS
319081 7013 That number was easy.Thanks again for your help Ron
plate was hard to read hope this is right FB4NI 036. THE PART NUMBER WAS
319081 7013 That number was easy.Thanks again for your help Ron
#6
08-14-12, 07:02 PM
Member
I cant find anything on your air handler. You will need to take the covers off the ahu and locate either the control board or the fan relay and get numbers off of it.
#7
08-14-12, 09:06 PM
Forum Topic Moderator
http://www.docs.hvacpartners.com/idc...t/fa4a-4si.pdf
The FB4A will have the 4 inch by 4 inch circuit board.
What heat strip do you have in this air handler?
Does it have a heat sequencer?
The FB4A will have the 4 inch by 4 inch circuit board.
What heat strip do you have in this air handler?
Does it have a heat sequencer?
#8
08-14-12, 09:16 PM
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